The order is 100% prepaid, and the prepayment invoice has already been created, which also includes the tax amount.
However, when I try to post the final invoice, this error appears. Based on my analysis, it seems that Business Central is calculating the tax twice, which is causing the error.
I have not been able to find a way to resolve this issue. Could you please help me identify the cause and guide me on how to fix it?


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